I just wanted to mention that the use of rice protein is problematic because of arsenic contamination. As a result, some products have been substituting pea protein. The drawback of pea protein is that it tastes awful, while rice protein has a more neutral flavor. Pea protein, however, is preferable to whey or soy due to being hypoallergenic.
All of our ingredients are subjected to a battery of tests, including for heavy metal content. We would never use any ingredients that posed a threat to the health of our customers.
Another article on arsenic in rice
I don’t doubt you, but be careful about the sources. Spot testing may not always uncover sources of variable contamination. Check out these and other articles: